Chair and the Structure for Stretching a Mesh Over an Element of the Chair

ABSTRACT

A stretching structure of a stretching material in a chair in which the ratio of the rear frame of a backrest to the outline of the chair is small, design is smart, weight is reduced, the number of parts is reduced, and assemblability is improved and the backrest of the chair. In the chair having the backrest formed by stretching the stretching material on the front surface of the rear frame, the rear frame comprises a front frame to which the peripheral edge part of the stretching material is fixed and an upper reinforcement frame rod. The laterally facing upper reinforcement frame rod is connected at its both ends to both ends of the laterally facing upper frame rod at the top of the front frame with the center part of the upper reinforcement frame rod separated backward from the upper frame rod.

TECHNICAL FIELD

The present invention relates to a chair and the structure forstretching a mesh over the backrest, a seat, a headrest etc. of thechair.

BACKGROUND OF THE INVENTION

U.S. Pat. No. 6,386,634B1 discloses the backrest structure of a chairand the stretching structure of a mesh in the backrest in which edgematerial is mounted by molding around the mesh to which tension isalready applied, the edge material engaging in grooves in a frontsurface of a back frame to apply mesh over the front surface of the backframe.

JP2004-49685A discloses that an engagement piece mounted to theperiphery of a mesh engages on a peripheral groove on the rear surfaceof a back frame, said engagement piece being pressed into the groove bythe binding frame mounted to the rear surface of the back frame to applytension to the mesh over the upper surface of the back frame.

A hanger for having clothes of a sitting person is mounted to thebackrest of a chair in JP6-45553U, JP2004-159745A, JP9-10189U,JP11-155690A and JP5-7179U.

Problems to be Solved by the Invention

However, U.S. Pat. No. 6,386,634B1 discloses that it is necessary totake the width of the back frame to prevent flexure of the back frame byforce applied to the mesh when the user sits down, a groove whichengages with the edge material around the mesh being formed on the frontsurface of the back frame so that the periphery of the back frame isexposed from the mesh. The back frame greatly occupying the appearanceof the chair causes bad appearance in design.

In JP2004-49685A, when a user sits down on the chair, flexing of theback frame against the force applied to the mesh is prevented by boththe back frame and binding frame. Thus, the back frame covered with themesh and binding frame not covered with the mesh are overlapped andexposed to the outside, which does not produce good appearance in designas well as heavy weight, a lot of the parts, a lot of time forassembling and high cost.

In JP6-45553U and JP2004-159745A, the support rod for supporting thehanger body is directly mounted in the middle of the rear surface of thebackrest. It cannot be applied to a chair in which mesh is applied tothe back frame. And a special device is required so that the mountingparts do not project from the front surface of the backrest when thesupport rod is directly attached to the middle of the rear surface ofthe backrest.

In JP9-10189U, JP11-155690A and JP5-7179U, the support rod is mounted tothe transverse rod at the lower part of the rear of the backrest orsupport post standing from the lower part thereby increasing the lengthof the support rod. When the chair is pulled with the hunger body, thehanger is likely to be broken.

In view of the above disadvantages in the prior art, it is objects ofthe present invention to solve the problems below:

(A) To provide a chair with the backrest structure in which the ratio ofthe back frame is small with respect to the appearance of the chair,having good design, light weight, reduction in the number of parts andimprovement in assembling.

(B) To provide a chair with a hanger in which the hanger is easilymounted to the backrest to allow parts for mounting the hanger not toproject from the front surface of the backrest, preventing the hangerfrom being damaged and providing good appearance.

(C) To provide the structure for a mesh over the backrest of a chair inwhich the ratio of a frame to appearance of the chair is small toprovide good appearance, light weight, reduction in the number of partsand improvement in assembling.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a front elevational view of the first embodiment of a chairaccording to the present invention;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a rear perspective view thereof;

FIG. 4 is a front perspective view of the backrest;

FIG. 5 is a sectional view taken along the line V-V in FIG. 4;

FIG. 6 is a sectional view taken along the line VI-VI in FIG. 4;

FIG. 7 is an enlarged perspective view of the part VII in FIG. 4;

FIG. 8 is a side view of the second embodiment of a chair with a hangeraccording to the present invention;

FIG. 9 is an enlarged rear perspective view of main part of the chair inFIG. 8;

FIG. 10 is a rear enlarged exploded perspective view of the chair inFIG. 8;

FIG. 11 is a front enlarged exploded perspective view thereof;

FIG. 12 is an enlarged sectional view taken along the line XII-XII inFIG. 9; and

FIG. 13 is an enlarged sectional view taken along the line XIII-XIII inFIG. 9.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

FIGS. 1-7 show the first embodiment of the present invention.

The present application is applied to the structure of the backrest ofthe chair and the structure of mesh in the backrest.

As shown in FIGS. 1 and 2, a reclining chair 1 comprises a leg 4comprising five leg rods 3 each of which has a caster 2 at the end. Atthe center of the leg 4, a telescopic leg post 6 which comprises a gasspring 5 stands. At the upper end of the leg post 6, a rear part of asupport base 7 is fixed.

The support base 7 comprises a hollow rhombus-like box which opens at anupper front part, and arms 8,8 are integrally formed from each side ofthe front part of the support base 7.

A hexagonal pivot 9 passes through the support base 7 in the middle. Ateach end of the pivot 9 extending from the support base 7, a tubularportion 11 a fits. The tubular portions 11 a are provided at the lowerfront ends of a pair of backrest support rods 11,11 that support abackrest 10. The backrest 10, the backrest support rods 11,11 and thebackrest 10 are rotated around the pivot 9 with respect to the supportbase 7.

Inside the support base 7, there are provided a rubber torsion unit forpromoting the pivot 8 in an anticlockwise direction and apromoting-force adjusting device (not shown). In the middle of the frontlower surface of the support base 7, there is a gas spring unit 13 forassisting promoting force of the rubber torsion unit in connection withthe rubber torsion unit to form a force-promoting unit to stand thebackrest 10.

Short arms 12,12 project from the backrest support rods 11,11 at theback of the pivot 9. At the upper ends of the arms 12,12, a pair ofseat-supporting frames 15,15 which support each side of a seat 14 areconnected at the rear ends with a shaft 16.

The backrest 10 will be described with respect to FIGS. 3-7.

In FIG. 3, a back frame 17 of the backrest 10 comprises a rectangularsynthetic-resin front face frame 18. The front face frame 18 comprisesan upper frame rod 18 a, a lower frame rod 18 b, a left-side frame rod18 c and a right-side frame rod 18 d. The rods 18 b,18 d are wider thanthe rods 18 a,18 b. A mesh is held on the rods 18 a,18 b,18 c,18 d.

In FIGS. 4 and 5, a pair of grooves 19,20 is formed longitudinally onthe outer side surfaces of the right and left side frame rods 18 c,18 d.

In FIG. 6, a groove 21 is horizontally formed along the lower edge ofthe front surface of the upper frame rod 18 a, and a groove 22 ishorizontally formed along the upper edge of the front surface of thelower frame rod 18 b.

A surface 21 a between the lower edge of the front surface of the upperframe rod 18 a and the groove 21 and a surface 22 a between the upperedge of the front surface of the lower frame rod 18 b and the groove 22are grooved by thickness of an outward portion 25 b of an edge piece 25.When the edge piece 25 engages with a corner between the lower surfaceand the front surface of the upper frame rod 18 a and the front surfaceand with a corner between the upper surface and the front surface of thelower frame rod 18 b, the end face of each of the edge piece 25 iscoplanar with the front surfaces of the upper frame rod 18 a and thelower frame rod 18 b.

A mesh 23 may be preferably net-like or mesh-like material knitted orwoven from high-tension plastic or other elastic fibers, or may be wovenfabric, synthetic resin sheet or porous sheet. Synthetic resin edgepieces 24,24 which engage in a pair of grooves 19,20 are fixed in theleft and right side edges of the mesh 23 by molding. The synthetic-resinedge pieces 25,25 which has a hook-like portions 25 d,25 d and engage inthe grooves 21,22 are fixed in the upper and lower edges by molding.

The edge piece 25 comprises a base 25 a, the outward portion 25 b, and aturning portion 25 c which turns in parallel with the base 25 a from theend of the outward portion 25 b. The base 25 a and the outward portion25 b constitute the hook-like portion 25 d.

The size of the mesh 23 mounted to the edge pieces 24,24,25,25 isformerly determined to apply a suitable tension to the mesh 23 when theedge pieces 24,24,25,25 engage in the grooves 19,20 or the grooves21,22.

In FIGS. 4-7, the right and left edge pieces 24,24 of the mesh 23 engagein the grooves 19,20 of the right and left side frame rods 18 c,18 d.The upper and lower ends of the mesh 23 are wound from the front surfaceto the rear surface around the upper and lower surfaces of the upper andlower frame rods 18 a,18 b. The hook-like portions 25 d,25 d of theupper and lower edge pieces 25,25 engage on the corner between the lowersurface and the front surface, and the corner between the upper surfaceand the front surface. The turning portions 25 c,25 c of the upper andlower edge pieces 25,25 engage in the upper and lower grooves 21,22, sothat the mesh 23 is stretched over the entire front surface of the frontface frame 18 tensionally.

Thus, the front surface of the front face frame 18 or the front surfaceof the back frame 17 is entirely covered with the mesh 23. So the backframe 17 is not so occupied in the appearance of the chair, so that goodimpression is given in design.

In FIGS. 3 and 6, to each side end of the upper frame rod 18 a of thefront face frame 18, an arcuate upper reinforcement rod 26 is joined sothat the middle of the rod 26 is spaced apart from the upper frame rod18 a. The upper reinforcement rod 26 and the upper frame rod 18 a islike crescent.

The upper reinforcement rod 26 keeps strength of the upper part of theback frame 17 together with the back frame 17. When a user is reclinedon the backrest 10, it is allowed for the upper frame rod 18 a to beslightly flexed elastically.

The upper reinforcement rod 26 is spaced apart from the upper frame rod18 a. Thus, without hindering attachment of the mesh 23, a headrest 27as shown by dotted lines in FIG. 4 and an optional member such as ahanger for clothes in FIG. 8 and so on are detachably mounted.

The upper reinforcement rod 26 is also used with a hand when the chairis moved.

In FIGS. 3, 6 and 7, to the lower ends of the right and left side framerods 18 c,18 d of the front face frame 18, both ends of the lowerreinforcement rod 28 are coupled. The middle of the lower frame rod 18 bis spaced forward of the lower reinforcement rod 28, but each endthereof is fastened to each end of the lower reinforcement rod 28 with ascrew 29.

The lower end of the mesh 23 is wound around the lower frame rod 18 bafter the lower frame rod 18 b is fastened to the front surface of thelower reinforcement rod 28. A folding portion 25 c of the lower edgepiece 25 is engaged in the groove 22 of the lower frame rod 18 b, sothat the mesh 23 is mounted to the lower frame rod 18 b.

When the chair is scrapped, a tool such as a screwdriver (not shown) isstuck through the mesh 23 and engaged with a head of the screw 29 whichis loosened, so that the lower frame rod 18 b is removed from the lowerreinforcement rod 28. Thereafter, the upper edge of the mesh 23 and theright and left side edges are removed from the upper frame rod 18 a andthe right and left side frame rods 18 c,18 d with the edge members25,24,24. The mesh 23 is separately removed from the back frame 17 andreplaced with a new one.

When the chair is moved and hit with another chair, the lower frame rod18 b is protected by the lower reinforcement rod 28, so that the lowerends of the lower frame rod 18 b and the mesh 23 are prevented frombeing damaged.

FIGS. 8-13 show the second embodiment in which a hanger is mounted tothe chair in the first embodiment of the present invention. The basicstructure of the chair is similar to the first embodiment, and the samenumerals are allotted to the same members. Description thereof isomitted.

A chair 30 with a hanger in the second embodiment of the inventioncomprises a hanger 31 that moves up and down behind the backrest 10.

The hanger 31 comprises a hanger body 32 on which a suit can be hung;and a pair of support rods 33,34 which support the body 32. The supportrods 33,34 are mounted on the backrest 10 with a mounting member 35 anda screw seat piece 36 by a screws 37.

The backrest 10 comprises the back frame 17 in which the mesh 23 inFIGS. 1-7 is stretched over the front face frame 18. The middle of thehanger 31 is spaced apart from the upper frame rod 18 a of the frontface frame 18, and each end of the hanger 31 is mounted to the middle ofthe upper reinforcement rod 26 connected to the upper frame rod 18 a.

A pair of support rods 33,34 comprises parallel vertical rod portions 33a,34 a; extending rod portions 33 b,34 b inclined upward of the verticalrod portions 33 a,34 a; and connecting portions 33 c,34 c curveddownward of the vertical rod portions 33 a,34 a. The support rods 33,34are connected at inner ends of the connecting portions 33 c,34 c.

The upper ends of the extending rod portions 33 b,34 b are plain. Theextending rod portions 33 b,34 b are mounted to the right and left endsof the hanger body 32 with screws (not shown), so that the support rods33,34 are fixed to the hanger body 32.

The extending rod portions 33 b,34 b of the support rods 33,34 arecurved forward. So the hanger body 32 is positioned in front of the rearend of the upper reinforcement rod 26.

FIGS. 12 and 13 are enlarged sectional views taken along the lineXII-XII and XIII-XIII in FIG. 9.

In FIGS. 9-12, plain portions 40,41 are formed on opposite surfaces38,39 of the vertical rod portions 33 a,34 a of the right and leftsupport rods 33,34.

A mounting member 35 comprises a thick rectangular plate. The right andleft ends 42,42 are formed in size such that the mounting member 35 canengage in the plain portions 40,41 of the vertical rod portions 33 a,34a of the right and left support rods 33,34.

On the inner side edges of the plain portions 40,41, verticalprojections 43,44 are provided in parallel with each other.

The projections 43,44 engage in engagement grooves 45,45 on the frontsurface of the mounting member 35 so that the support rods 33,34slidably move with respect to the mounting member 35.

In FIGS. 11 and 12, vertical forward projections 46,46 are provided onthe front surface of the vertical rod portions 33 a,34 a of the rightand left support rods 33,34. On the rear surface of the upperreinforcement rod 26 of the backrest 10, vertical engagement grooves47,47 are provided to engage with the forward projections 46,46.

Through holes 48,48 are formed in the mounting member 35, and throughholes 49,49 are formed in the upper reinforcement rod 26. Blind bores50,50 are formed in the rear surface of a screw seat piece 36 at aposition corresponding to the through holes 48,48.

The hanger 31 will be mounted to the upper reinforcement rod 26 below.

The right and left support rods 33,34 having the hanger body 32 at theupper end contacts the upper reinforcement rod 26 to allow the forwardprojections 46,46 of the vertical rods 33 a,34 a of the support rods33,34 to engage in the engagement grooves 47,47 on the rear surface ofthe screw seat piece 26, thereby positioning the support rods 33,34.

Then, the right and left ends of the mounting member 35 engage in theplain portions 40,41 of the vertical rod portions 33 a,34 a of the rightand left support rods 33,34. In the engagement grooves 45,45 on thefront surface of the mounting member 35, the projections 43,44 of theplain portions 40,41 of the vertical rod portions 33 a,34 a engage, andthe mounting member 35 is positioned between the right and left verticalrod portions 33 a and 34 a.

Then, the screw seat piece 36 contacts the front surface of the upperreinforcement rod 26. While the support rods 33,34 are put between theupper reinforcement rod 26 and the mounting member 35, the upperreinforcement rod 26 is held between the mounting member 35 and thescrew seat piece 36. The screws 37,37 pass into the blind bores 50 ofthe screw seat piece 36 through the through holes 48,49, so that thehanger 31 is mounted to move up and down with suitable resistance behindthe backrest.

An engagement bore 52 for mounting a cover member 51 is formed in themiddle of the mounting member 35. An inward projection 53 is provided ona rear edge of the engagement bore 52. The cover member 51 comprises athin elongate plate and has in the middle an engagement claw 54 which isengagable with the inward projection 53 of the engagement bore 52.

On the rear surface of the mounting member 35, there is formed a recess55 which engages with the cover member 51. The engagement claw 54 of thecover member 51 is put in the engagement bore 52 of the mounting member35 to allow the claw 54 to engage on the inward projection 53. Theentire cover member 51 engages in the recess 55, so that the covermember 51 is mounted to the mounting member 35.

The cover member 51 is also used as nameplate.

The hanger 31 is slidable up and down. When a suit is hung at an upperlimit where the hanger slides, the hanger 31 moves down owing to theweight of the suit and the lower end of the suit contacts a floor, sothat the suit is likely to become dirty.

For prevention, in FIGS. 10 and 12, a plurality of small rearwardprojections 56 a,56 b are provided on the vertical rod portions 33 a,34a. and an engagement groove 57 which is elastically engagable with thesmall projections 56 a,56 b are provided in FIGS. 11 and 12. Thus, at aplurality of vertical positions where the small projections 56 a,56 belastically engage in the engagement groove 57, the hanger can be heldagainst a certain load.

By tightening the screw 37, the support rods 33,34 may be held betweenthe upper reinforcement rod 26 and the mounting member 35. To change aheight of the hanger 31, the screw 37 is loosened to allow the supportrods 33,34 to move up and down. Thereafter, the screw 37 is tightenedagain to allow the hanger 31 to be held at a desired height.

Various modifications of the present invention may be possible withoutdeparting from the scope of claims.

For example, in the foregoing embodiment, the upper reinforcement rod 26and the lower reinforcement rod 28 are mounted on the rear surface ofthe upper and lower frame rods 18 a,18 b. But the upper reinforcementrod 26 or the lower reinforcement rod 28 may be omitted.

In the foregoing embodiments, the present invention is applied to thestretching structure of the mesh 23 of the backrest 10 of the chair, butmay be applied to a seat of a chair or a headrest.

The edge member 25 is made like a letter L and may engage to a cornerbetween the lower surface and front surface of the upper frame rod 18 aor lower frame rod 18 b.

1-23. (canceled)
 24. A chair comprising: a seat; and a backrestcomprising a back frame and a mesh stretched over the back frame, saidback frame comprising a front face frame to which a periphery of themesh is mounted, said front face frame comprising an upper frame rod andan upper reinforcement rod each end of which is coupled to each end ofthe upper frame rod so that a middle of the upper reinforcement rod isspaced rearward of the upper frame rod.
 25. A chair of claim 24, furthercomprising an edge piece having a hook-like portion at an end, an upperpart of the mesh being wound from a front surface of the upper frame rodto a rear surface around an upper surface, said edge piece engaging witha corner between a lower surface and the front surface of the upperframe rod so that the mesh is stretched over the front face frame.
 26. Achair of claim 25 wherein the front face frame further comprises sideframe rods each of which has a vertical groove in outer side surface,the edge piece to which the mesh is mounted engaging in the verticalgroove so that the mesh is stretched over the front face frame.
 27. Achair of claim 26 wherein the upper frame rod is narrower than the sideframe rods.
 28. A chair of claim 24, further comprising an optionalmember mounted at part of the upper reinforcement rod spaced apart fromthe upper frame rod.
 29. A chair of claim 28 wherein the optional membercomprises a headrest.
 30. A chair comprising: a seat; and a backrestcomprising a back frame and a mesh stretched over the back frame, saidback frame comprising a front face frame to which a periphery of themesh is mounted, said front face frame comprising a lower frame rod anda lower reinforcement rod each end of which is coupled to each end ofthe lower frame rod so that a middle of the lower reinforcement rod isspaced rearward of the lower frame rod.
 31. A chair of claim 30, furthercomprising an edge piece having a hook-like portion at an end, a lowerpart of the mesh being wound from a front surface of the lower frame rodto a rear surface around a lower surface, said edge piece engaging witha corner between an upper surface and the front surface of the lowerframe rod so that the mesh is stretched over the front face frame.
 32. Achair of claim 31 wherein the front face frame further comprises anupper frame rod and side frame rods each of which has a vertical groovein outer side surface, the edge piece to which the mesh is mountedengaging in the vertical groove so that the mesh is stretched over thefront face frame.
 33. A chair of claim 32 wherein the lower frame rod isnarrower than the side frame rods.
 34. A chair of claim 32 wherein theupper frame rod, the side frame rods and the lower reinforcement rod ofthe front face frame are integrally formed, each end of the lower framerod being mounted to the lower reinforcement rod with a screw.
 35. Achair comprising: a seat; and a backrest comprising a back frame and amesh stretched over the back frame, said back frame comprising a frontface frame to which a periphery of the mesh is mounted, said front faceframe comprising an upper frame rod, a lower frame rod, and upper andlower reinforcement rods each end of which are coupled to each end ofthe upper and lower frame rods so that middles of the upper and lowerreinforcement rods are spaced rearward of the upper and lower framerods.
 36. A chair of claim 35, further comprising a first edge piecehaving a hook-like portion at an end, an upper part of the mesh beingwound from a front surface of the upper frame rod to a rear surfacearound an upper surface, said first edge piece engaging with a cornerbetween a lower surface and the front surface of the upper frame rod sothat the mesh is stretched over the front face frame.
 37. A chair ofclaim 36, wherein the front face frame further comprises side frame rodseach of which has a vertical groove in outer side surface, the edgepiece to which the mesh is mounted engaging in the vertical groove sothat the mesh is stretched over the front face frame.
 38. A chair ofclaim 37, wherein the upper frame rod is narrower than the side framerods.
 39. A chair of claim 35, further comprising an optional membermounted at part of the upper reinforcement rod spaced apart from theupper frame rod.
 40. A chair of claim 39, wherein the optional membercomprises a headrest.
 41. A chair of claim 35, further comprising asecond edge piece having a hook-like portion at an end, a lower part ofthe mesh being wound from a front surface of the lower frame rod to arear surface around a lower surface, said edge piece engaging with acorner between an upper surface and the front surface of the lower framerod so that the mesh is stretched over the front face frame.
 42. A chairof claim 41, wherein the front face frame further comprises side framerods each of which has a vertical groove in outer side surface, the edgepiece to which the mesh is mounted engaging in the vertical groove sothat the mesh is stretched over the front face frame.
 43. A chair ofclaim 42, wherein the lower frame rod is narrower than the side framerods.
 44. A chair of claim 42, wherein the upper frame rod, the sideframe rods and the lower reinforcement rod of the front face frame areintegrally formed, each end of the lower frame rod being mounted to thelower reinforcement rod with a screw.
 45. A chair comprising: a seat; abackrest comprising a back frame that comprises an upper frame rod andan upper reinforcement rod each end of which is coupled to the upperframe rod so that a middle of the upper reinforcement frame is spacedrearward of the upper frame rod; and a hanger mounted to the upperreinforcement rod.
 46. A chair of claim 45, wherein the hanger comprisesa hanger body and a support rod mounted to the upper reinforcement rodand supporting the hanger, an upper part of the support rod being curvedforward so that the hanger body is positioned in front of a rear end ofthe upper reinforcement rod.
 47. A chair of claim 45, further comprisinga mounting member, the support rod comprising a pair of support rodseach of which has a plain portion on an opposite surface, the mountingmember engaging in the plain portions and engaging with the upperreinforcement rod so that the hanger is mounted to a rear side of thehanger.
 48. A chair of claim 47, wherein the plain portions are formedin parallel with each other on opposite surfaces of the support rods,said support rods being movable vertically with respect to the mountingmember engaged with the upper reinforcement rod.
 49. A chair of claim47, wherein a downward vertical projection is formed on opposite surfaceof said pair of support rods, engagement grooves formed in the frontsurface of the mounting member slidably engaging with the projections toslide vertically.
 50. A chair of claim 47, wherein at least one ofopposite surfaces of said pair of support rods has a plurality of smallrearward projections spaced apart from one another, a front surface ofthe mounting member having engagement holes in which said smallprojections can elastically engage so that the support rod is held at aplurality of vertical positions where said small projection engage inthe engagement hole.
 51. A chair of claim 47, wherein the mountingmember and the upper reinforcement rod have through holes through whicha screw passes, the support rod being held between the mounting memberand the screw seat piece while the mounting member is held on a rearsurface of the upper reinforcement rod to allow the hanger to be mountedbehind the backrest, an exposed head of the screw being covered with acover member on a rear surface of the mounting member.
 52. A chair ofclaim 47, wherein the back frame comprises a front face frame comprisingan upper frame rod and a pair of side frame rods upper end of which ismounted to each end of the upper frame rod, the mesh being stretchedover the front face frame.
 53. A chair of claim 47, wherein the upperframe rod and the upper reinforcement rod are coupled to each other ateach end so that a middle of the upper reinforcement rod is curvedrearward to form a crescent.
 54. The structure of mesh stretched over anelement of a chair, said structure comprising: a frame comprising a pairof frame rods; and the mesh comprising a pair of edge portions which iswound from a front surface of each of said pair of frame rods to a rearsurface around an outer side edge, an edge piece mounted to the edgeportion of the mesh and having a hook-like portion at one end, said edgepiece engaging on a corner between an inner side surface and the frontsurface of the frame rod so that the mesh is stretched over the frame.55. The structure of claim 54, wherein the element of the chaircomprises a backrest.
 56. The structure of claim 54, wherein the elementcomprises a seat.
 57. The structure of claim 54, wherein a groove isformed along inner side edge on the frame rod, a turning portion of thehook-like portion of the edge piece engaging in the groove.
 58. Thestructure of claim 57, wherein a surface between the inner side edge andthe groove on the surface of the frame rod is grooved by thickness of anoutward portion of the turning portion so that an end face of the edgepiece is coplanar with the surface of the frame rod.
 59. The structureof claim 58, wherein the mesh is pressed on the end face of the edgepiece.
 60. The structure of claim 54, wherein a longitudinal groove isformed on an outer side surface of the frame rod, the edge portion andthe edge piece fixed thereto being engaged in the groove.